After merging multiple tables together to pass all incoming features through a same transformer construct it would be convenient to have the option to remove or unexposed missing attributes in transformers as "FeatureTypeFilter", "BulkAttributeRemover", "AttributeManager" and the like. This would make it much easier for a following routing action by an attribute like fme_feature_type leaving missing attributes behind.
I am aware that the state "Missing" actually marks an attribute as non existent in FME terms as a table column but it is kept exposed to any following transformer connected to. Having a huge quantity of attributes makes it difficult to identify an attribute one will work with and most of all slows down response time of some dialogues (especially AttributeManager) significantly. It would probably free up some memory in use by the FME process.
